> I'm new to the idea of parallel computing with matlab on a cluster. I> understand that using broadcast variables, like>> matlabpool 10> bigd = loadBigData(); % loads a large matrix of class double> r = zeros(100,1);> parfor ii = 1:100,> r(ii) = doSomething(ii,bigd);> end>> causes a lot of extra network traffic. My first question is whether> the variable bigd is sent over the network 10 times (i.e. once per> lab) or 100 times (once per loop iteration).

Data broadcast into a PARFOR loop is sent over once per lab - however,even that is possibly more than ideal. You could for example use myWorker Object Wrapper